3/2/2015 HeavyhaulerWikipedia,thefreeencyclopedia

http://en.wikipedia.org/wiki/Heavy_hauler 1/1

ALMAantennaintransitonaselfpropelledmodulartransporter

TwoMANSEballasttractorspullingandoneMercedespushinga100,000kg(220,000lb)transformeron10axlelowboytrailer

HeavyhaulerFromWikipedia,thefreeencyclopedia

Aheavyhaulerisaverylargetransporterformovingoversizeloadstoolargeforroadtravelwithoutanescortandspecialpermit.

Aheavyhaulertypicallyconsistsofaheavytractorunitunitandmultiaxledlowboyflatbedtrailer.Sometrailersmayhaveindependentlysteerablewheels,andseveralmightbetowedbyoneormoretractorunitsinatrain.

Selfpropelledmodulartransporters,somefeaturingadozenandmoreselfsteeringaxleswithscoresofrubbertirestospreadoutaload,areincreasinglybeingmanufactured.Theabilityofcombinationandselfpropelledheavyhaulerstocarryloadsof100tonsisnotunusual.

Application

Insomecasesaheavyhaulerisdesignedandconstructedtomoveaparticularloadonaoneofforshorttermbasis.Anexampleistheselfpropelledantennatransporter(http://news.bbc.co.uk/2/hi/science/nature/6922967.stm)fortheALMAradiotelescopeproject,a130tonne28wheeledrigidvehicledesignedtocarryandplace115tonneradiotelescopeantennasupamountaintoanaltitudeof5000m(16,500ft).

Typicalloadsmovedbyheavyhaulersunderescortonhighwaysincludegiantboilersandpressurevesselsusedinthechemicalindustries,industrialplants,prefabricatedsectionsforconstructionprojects,giantpowertransformers,turbines,andhouses(generallymadeoftimber).

Theterm"heavyhauler"mayalsobeusedtorefertooffroaddumptrucksandorecarriersusedinminingandconstructionwithcapacitiesupto400tonnes,oranairplanethathasbeenespeciallyconstructedformovingheavymaterials.[1]

Seealso

BallasttractorConstructionequipmentPacifictrucksSelfpropelledmodulartransporterToter

References

1. ^BoeingSkyhookheavyhauler(http://wizbangpop.com/2008/07/09/boeingplansboldairshiphauler.php)

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